def FlagCxx11Features()

in cpplint.py [0:0]

• 29 lines of code
• 12 McCabe index (conditional complexity)

def FlagCxx11Features(filename, clean_lines, linenum, error):
    """Flag those c++11 features that we only allow in certain places.

  Args:
    filename: The name of the current file.
    clean_lines: A CleansedLines instance containing the file.
    linenum: The number of the line to check.
    error: The function to call with any errors found.
  """
    line = clean_lines.elided[linenum]

    include = Match(r'\s*#\s*include\s+[<"]([^<"]+)[">]', line)

    # Flag unapproved C++ TR1 headers.
    if include and include.group(1).startswith('tr1/'):
        error(filename, linenum, 'build/c++tr1', 5,
              ('C++ TR1 headers such as <%s> are unapproved.') % include.group(1))

    # Flag unapproved C++11 headers.
    if include and include.group(1) in ('cfenv',
                                        'condition_variable',
                                        'fenv.h',
                                        'future',
                                        'mutex',
                                        'thread',
                                        'chrono',
                                        'ratio',
                                        'regex',
                                        'system_error',
                                        ):
        error(filename, linenum, 'build/c++11', 5,
              ('<%s> is an unapproved C++11 header.') % include.group(1))

    # The only place where we need to worry about C++11 keywords and library
    # features in preprocessor directives is in macro definitions.
    if Match(r'\s*#', line) and not Match(r'\s*#\s*define\b', line): return

    # These are classes and free functions.  The classes are always
    # mentioned as std::*, but we only catch the free functions if
    # they're not found by ADL.  They're alphabetical by header.
    for top_name in (
            # type_traits
            'alignment_of',
            'aligned_union',
    ):
        if Search(r'\bstd::%s\b' % top_name, line):
            error(filename, linenum, 'build/c++11', 5,
                  ('std::%s is an unapproved C++11 class or function.  Send c-style '
                   'an example of where it would make your code more readable, and '
                   'they may let you use it.') % top_name)